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Original Filed Jan. 31, 1927 3 Sheets-SneetZ avweuboz J. J. HAWXHURST LIQUID DHLIYERX ONTROL 3 Sheets-Sne et :5

Original Filed Jan. 31. 1927 avwewtoz RcieeuedJan. 1,1939

UNITED STATES PATENT OFFICE" com! I. m, or nnw vonx, asslenon, BY :omscr urn ms assmmnmrs, To 1.1mm) DISPENSING svsrms, nc, or amount, m YORK,

A CORPORATION OF NEW You LIQUID-DELIVERY CONTROL original :0. 1,047,043, dated October 25, 192i, Serial N fled rpllm u.

mreissue filed October 2a, 1929. Serial 110. 401,940.

This invention relates particularly to the dispensing of inflammable or otherwise dangerous liquids such as gasoline and the like.

Special objects of the invention are to en'- able the flow being controlled at the point'of are attaine in t is invention by certain novel features .of construction, combinations and relations of parts as hereinafter set forth and broadly claimed.

The drawings accompanying and forming part of this specification illustrate the invention as embodied in certain practical commercial forms, but it is to be understood that the structure and arrangement may vary all within the scope of .the' appended claims.

Figure 1 is an illustrative embodiment of a pressure delivery' system embodying features of the invention, the parts appearing in elevation and certain of them broken away for a lack of space or greater clearness.

Figure 2 is an enlarged broken detail and part sectional view illustratin particularly the various control devices an connections.

Figure 3 is an enlarged cross sectional view of the final delivery line -'or hose showing the nozzle control valve this view beingre 1. r

Figure 4vis an enlarged vertical sectional view of the control valve on the nozzle, the same being taken asonflthe line {1*4 of Figtaken as on,line 3-3 of igu ure 3. a

Figure 5 is a broken part sectional view of an electromagnetic form of delivery control.

Fi 6 and 7 are cross-sectionallviews on "different scales as on lines 6-6 and 7--7 of Fi re :5. Y I

In e system disclosed in Figures 1 and'2, the liquid,gasoline for instance, is stored in a tank 10 vented by a line 11. From. a low point in this tank the liquid'i's carried by a connection 12 through check valves 13 into a smaller pressure tank 14 of predetermined capacity. From this pressure tank, the liquid passes through a delivery line 15 to a de-' livery stand 16 and is measured by -a-flow pipes or hose piston or diaphra meter 17, as dispensed through a delivery hose 18.

The actual delive is efiected'through the power ofcompresse air supplied by a compressor 19. The connections for this urpose comprises an air line 20 extending om the compressor tank 21to' a pressure controlled valve 22 which is connected by an air lme 23 with the top of the pressure tank 14.

The control valve 22 is shown in Figure 2 as comprising a valve stem 24 acted on by a 25 and connected at its lower end with t e reversely facing valves 26, 27 to cooperate respectively with the exhaust port 28 and the pressure supply port 29. The latter port is open to the pressure line 20 so that when ressure is on the diaphragm and valve 27 is eld open, suchpressure will flow past valve 27 and out through the connection 23 into the ressure tank. At such a time valve 28 will closed but when sure on the diaphragm is released an the spring 30 thrusts the valve stem upwardly, valve 26 will be opened, permitting pressure a in the tank to be exhausted by way of exhaust connection 31 to the vent line 11'. It will be seen too that in this reverse position, the pressure supply valve 27 will be seated to prevent res- I The control-valve is automatically ovv erned, in the disclosure, by what -is termed a tele hone hook? control involving ere" a pivoted hoo 32 for supporting the delivery nozzle 33, said hook engaging a sp pressed plunger '34 a'vent valve 35 and a prewure' supply v ve 36, thei latter permitting flow of compressed air from the air line 20 out through the line 37 to the diaphragm or piston 35 and the vent valve 35 controlling exhaust back through the and out the exhaust rt 38;

In the position ustrated in Figure 2 where the nozzle is removed from the hook, the supply valve is open and the vent valve: closed so that pressure is admitted to thediaphragm 25*of the control. valve to put pressure on the liquid in tank 14. In this pressure line 37 admission position of the tele hone hook valve, the vent valve 35 is close therefore, when the nozzle is relfloved from its su port, it will be seen that the control valve will be automaticallyactuated to admit pressure to the pressure tank and that at such times liquid will be delivered from the pressure tank to the meter,'ready for delivery throu h may escape, wit

the hose or final delivery line. When 1: e nozzle' is restored to its book, the supply valve 36 will be closed and the vent valve will be opened to exhaust pressure from the diaphragm of the control valve, which latter will of discharge by what is known as a nozzle valve. The objection to this operation is that when the'nozzle valve is closed, the hose is subjected to the full pressure of the liquid so that if there is any weakness in it, or if the hose be torn away serious consequences. A further objection is that when the delivery is completed by closin the nozzle valve and the hose is hung on its ook, it will be left full of liquid and hence remain an extra hazard."

The objections mentioned are overcome in.

I the present invention by starting and stopping the flow at the entry to the hose under control of a push button or other device at the nozzle or delivery end of the hose.

In Figures 1 and 2, the flow of liquid to the delivery hose is shown as controlled by a pressure operated valve consisting of a piston 39 operating in a cylinder 40 and actuatingla y stem 41 carrying a valve 42 which is norma seated by a s ring 43. This valve is interposed in the 'quid delivery line at the dischargle side of the meter and may be suitabl oused in the delivery stand. 7

or controlling the delivery valve de-' scribed, a push button 44 is shown located for convenient operation at the nozzle end of the hose, said push button actuating a stem 45 carrying the oppositely facing valve elements 45, 47, the first admitting pressure from an an supply line 48 to an air connection 49 extending back tosthe cylinder of the delivery valve and the second controlling an exhaust port 50.

A spring 51 is indicated for normally hold-- mg supply valve 46 closed and the exhaust va v e open. This push button valve may be made as a part of the nozzle structure or be suitabl attached thereto and the two air-lines V 48, 49 eading thereto may be simply small flexible tubing suitably secured. to the outside of the hose, as indicated. i

In operation, after the nozzle has been refrom' the stand, the liquid charged from hose, a norm upon been automatically forced from the pressure tank up to the meter and delivery valve, actual delivery of liquid can be efiected in any desired quantity by simply actuating the push button valve on the nozzle; It will be seen that when this push button is depressed, air under pressure will be supplied through connections 48, 49 to the piston of the delivery valve and said 'valve will be thereb opened to deliver metered liquid through t e nozzle of the hose.

When the desired quantity is delivered, pressure on the push button is removed, permitting the pressure supply valve 46 to close and the exhaust valve 4 for actuating the delivery valve is thereby cut off and all pressure on said valve is released back through connection 49 and b way of exhaust valve 47 to atmos here. e hose can thus be fully drained a when restored to the hook it will be empty. If anything should happen to break the air connections on the hose, no harm, can result,-

aside from the loss of air, as the liquid delivery valve will simply remain closed.

The structure and method of o ration of the delivery valve may vary to suit different r uirements. 11 Figure 5, the delivery valve is shown as of the electromagnetic type, involving a magnet 52 of the solenoid type having a movab 0 core 53 connected with the valve element 54, said magnet being controlled by a circuit, part of which is indicated at 55, ending in a push button switch 56 conveniently mounted on the nozzle. The electrical ener for this valve may be taken from the lighting circuit usually provided on these delivery stands as by means of a suitable connecting plug such as indicated at 57 7 The electromagnetic remote control of the delivery valve possesses the same" advantages to open. Pressure r each use so that moved from the hook and liquid has thereas the compressedair operation previously j described because any breakage in the control connections exten down the hose will do no more than sim ly eave the delivery'valve 1 in its closed condition. It will be understood that this remotely controlled delivery valve which makes it possible to maintain a dry I difierent systems with which it is used and the claims are to be construed accordingly.

- What is claimed is:

prising, in combination, a liquid sup 1y line, a delivery hose connected with said supply line, a flow meter in the supply line at the entrance to said delivery hose for continu ously metering amounts of li nid disdelivery valve in said liquid supply e and 1. A dry hose liquid delivery system comclosed prising, in combination, means, including apipe line for su plyin a flow of liquid under pressure, a de ivery ose connectedto discharge liquid from said supply line, a flow meter connected to continuously measure the discharge of said hose,. a delivery valve in said liquid supply line and normally closed to prevent flow from the supply line through the hose, means for holding said valve open to permit the hose to discharge metered quantities of liquid from the supply line and means adjacent the discharge end of the hose for controlling said valve actuating means to uninterruptedl discharge arbitrarily selected uantities 0 liquid from the hose and to stop t e flow into the hose, at any time from 'a control position at the discharge end of the hose, leaving the hose emptied of liquid.

3. A liquld delivery system, comprising in combination, a liquid supply line, means for furnishing an unlimited continuous supplyof liquid under pressure to said supply line, a flexible delivery hose at the, end of said supply line, a flow meter in the supply line ad acent said delivery hose for continuously metering any amounts of liquid discharged from said hose, means for efl'ecting flow control of liquid under pressure through said supply line and means at the discharge end of said delivery hose for actuating said con trol means to effect uninterrupted continuously metered delivery of liquid through the hose in any varying quantities and ,to determine the metered quantity and stop the flow delivered by the hose at any time entirely from a control position at the discharge end of the hose, 4. A liquid delive system, comprising. in combination, a liqui' supply line, means for furnishing an unlimited continuous supply of liquid under pressure to said supply hne, a flexible delivery hose at the end of said supply 7 line, a flow'meter in the supply line adjacent hose to supported relation on said support for preventing delivery of liquid by the hose under control of said means at the discharge end of the hose.

In testimonywhereof, I aflix m si ature.

JOHN' J. HAWXlI ST.

said delivery hosefor contmuiusly metering any amounts ofliquid discharged from said hose, means for effecting flow control of liquid under pressure through said supply line,

means at the dischar e end of said delivery hose for actuating sai control means toefiect uninterrupted continuously metered delivery of liquid through the hose in any varying quantities and to determine the metered quantity and stop the flow delivered by the hose at any time entirely {from a control position at the discharge end of the. hose, a support for the free end of said hose and means automatically operable on the return of the 

